186 Knickerbocker Avenue
Brooklyn, NY 11237BBL 3-03165-0032Map
Owner of record: Quan Yuan Property Corp.
186 Knickerbocker Avenue is a mixed residential and retail building built in 1931 in Brooklyn, 11237. It has 4 residential units across 3 floors. The owner of record is Quan Yuan Property Corp.. HPD has recorded 58 housing violations here, most recently on October 17, 2026. 38 of the 50 most recent violations are still open.
- HPD violations
- 58
- DOB violations
- 1
- ECB violations
- 0
- HPD complaints
- 46
What to know
Immediately hazardous issues among recent violations are still open.
Date of the most recent HPD inspection that found a problem.
No balance due on recent ECB violations.
Rent stabilization
No rent-stabilized units in 2018–2024 tax bills
Violations
Most recent first. Showing up to 50 per agency.
HPD housing violations · 58
- BHazardous
Remove all encumbrances consisting of household garbage at public hall, 1st story
Oct 17, 2026
Open — Nov sent out - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
May 5, 2026
Open — Nov sent out - ANon-hazardous
Post a proper notice of carbon monoxide detecting device requirements, in a form approved by commissioner, in a common area of a class a multiple dwelling near inspection certificate or provide notice to tenants in private dwellings missing
Apr 21, 2026
Open — Nov sent out - CImmediately hazardous
Post notice, in form approved by the department, stating the name and location of the person designated by the owner to have key to buildings heating system missing at public hall, 1st story
Apr 21, 2026
Open — Nov sent out - ANon-hazardous
Post, in a form approved by the commissioner, and maintain a notice in a common area of the building regarding the procedures that should be followed when a gas leak is suspected at public hall
Apr 21, 2026
Open — Nov sent out - CImmediately hazardous
Properly repair or replace the broken or defective wood saddle at door to building entrance at north (building front) , 1st story
Apr 21, 2026
Open — Nov sent out - CImmediately hazardous
Replace with new the missing mortise lock at door to building entrance at north (building front) , 1st story
Apr 21, 2026
Open — Nov sent out - CImmediately hazardous
Replace or repair the self-closing the doors that is missing or defective latch set at door to building entrance at north (building front) , 1st story
Apr 21, 2026
Open — Nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 20, 2025
Open — Info nov sent out - ANon-hazardous
Remove the accumulation of refuse and/or rubbish and maintain in a clean condition the at public hall, 1st story
Nov 2, 2025
Open — Nov sent out
Show 40 more ↓
- CImmediately hazardous
Replace or repair the self-closing doors that is missing or defective hinge at building front entrance
Nov 2, 2025
Closed — Violation closed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Jun 10, 2025
Open — Nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 29, 2024
Open — Info nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 22, 2023
Closed — Violation dismissed - CImmediately hazardous
Replace or repair the self-closing doors that is missing or defective ... at public hall, 1st story
Sep 21, 2023
Closed — Violation closed - BHazardous
Remove the accumulation of refuse and/or rubbish and maintain in a clean condition the building front at compactor closet, 1st story
Sep 21, 2023
Open — Nov sent out - CImmediately hazardous
Properly repair or replace the broken or defective locking assembly at building entrance door at public hall, 1st story
Sep 21, 2023
Open — Nov sent out - BHazardous
Remove the accumulation of refuse and/or rubbish and maintain in a clean condition the at building front
Sep 21, 2023
Open — Nov sent out - CImmediately hazardous
Abate the infestation consisting of roaches in the entire apartment located at apt 3l, 3rd story, 1st apartment from north at east
Aug 15, 2023 · Apt 3L
Open — Notice of issuance sent to tenant - CImmediately hazardous
Abate the infestation consisting of mice in the entire apartment located at apt 3l, 3rd story, 1st apartment from north at east
Aug 15, 2023 · Apt 3L
Open — Notice of issuance sent to tenant - BHazardous
Repair or replace the smoke detector missing in the entire apartment located at apt 3l, 3rd story, 1st apartment from north at east
Aug 15, 2023 · Apt 3L
Open — Nov sent out - CImmediately hazardous
Properly repair or replace the broken or defective upper window sash in the kitchen located at apt 3l, 3rd story, 1st apartment from north at east
Aug 15, 2023 · Apt 3L
Open — Nov sent out - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Mar 23, 2023
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 14, 2022
Closed — Violation dismissed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Feb 25, 2022
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Feb 25, 2022
Closed — Violation dismissed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Apr 9, 2021
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Oct 30, 2019
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Oct 18, 2018
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 24, 2017
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 10, 2016
Closed — Violation dismissed - BHazardous
Remove all encumbrances consisting of refrigerators ( 2 )1st and 2nd stories at public hall
Nov 8, 2006
Open — Not complied with - BHazardous
Replace with new the broken or defective skylight glass at roof
Sep 12, 2006
Open — Not complied with - BHazardous
Properly repair with similar material the broken or defective wood floor at 2nd story public hall
Sep 12, 2006
Open — Not complied with - ANon-hazardous
Post a proper notice of carbon monoxide detecting device requirements, in a form approved by the commissioner, in a common area of a class a multiple dwelling near inspection certificate or provide notice to tenants in a private dwelling.
Sep 12, 2006
Open — Nov sent out - ANon-hazardous
Post and maintain a proper sign on wall of entrance story showing the registration number assigned by the department and the address of the building.
Sep 12, 2006
Open — Nov sent out - BHazardous
Properly repair with similar material the broken or defective fire retardent plaster at walls and ceiling at 1st story public hall vestibule
Sep 12, 2006
Open — Not complied with - ANon-hazardous
Refit door at 1st story public hall vestibule
Sep 12, 2006
Open — Nov sent out - ANon-hazardous
Paint with light colored paint to the satisfaction of this department ceilings and walls at 1st story public hall
Sep 12, 2006
Open — Nov sent out - BHazardous
Properly repair with similar material the broken or defective wood floor at 1st story public hall
Sep 12, 2006
Open — Not complied with - BHazardous
Remove all encumbrances consisting of building material at 1st story public hall
Sep 12, 2006
Open — Not complied with - BHazardous
Remove all encumbrances consisting of refrigerator at 2nd story public hall
Sep 12, 2006
Open — Not complied with - ANon-hazardous
Post a proper notice of smoke detector requirements, in a form approved by the commissioner, at or near the mail box at 1st story public hall
Sep 12, 2006
Open — Nov sent out - BHazardous
Properly repair with similar material the broken or defective fire retardent plaster ceiling and walls at 2nd story public hall
Sep 12, 2006
Open — Not complied with - BHazardous
Replace with new the missing baluster at balustrade at 2nd story public hall
Sep 12, 2006
Open — Not complied with - BHazardous
Properly secure the loose light fixture at south wall at 3rd story public hall
Sep 12, 2006
Open — Not complied with - ANon-hazardous
Paint with light colored paint to the satisfaction of this department ceiling and walls at 2nd story public hall
Sep 12, 2006
Open — Nov sent out - ANon-hazardous
Paint with light colored paint to the satisfaction of this department ceiling and walls at 3rd story public hall
Sep 12, 2006
Open — Nov sent out - BHazardous
Properly repair with similar material the broken or defective wood floor at 3rd story pbulic hall
Sep 12, 2006
Open — Not complied with - BHazardous
Remove all encumbrances consisting of bicycles and household item at 3rd story public hall
Sep 12, 2006
Open — Not complied with
DOB building violations · 1
- Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Aug 16, 1993
Dob violation - active
ECB violations · 0
No ECB violations on record
Complaints
- Unsanitary condition
Garbage/recycling storage
Oct 23, 2026 · Apt BLDG
Open - Safety
Fire escape
Oct 23, 2026 · Apt BLDG
Open - Unsanitary condition
Garbage/recycling storage
Oct 23, 2026 · Apt BLDG
Open - Door/window
Door
Oct 21, 2026 · Apt BLDG
Open - General
Signage missing
Oct 21, 2026 · Apt BLDG
Open - Unsanitary condition
Garbage/recycling storage
Oct 21, 2026 · Apt BLDG
Open - Heat/hot water
Entire building
Oct 20, 2026 · Apt BLDG
Open - General
Signage missing
Oct 20, 2026 · Apt BLDG
Open - Unsanitary condition
Garbage/recycling storage
Oct 20, 2026 · Apt BLDG
Open - Unsanitary condition
Garbage/recycling storage
Oct 16, 2026 · Apt BLDG
Close
Show 36 more ↓
- Heat/hot water
Entire building
Oct 16, 2026 · Apt BLDG
Close - Unsanitary condition
Garbage/recycling storage
Oct 16, 2026 · Apt BLDG
Open - Unsanitary condition
Garbage/recycling storage
Oct 16, 2026 · Apt BLDG
Open - Door/window
Door
Nov 11, 2025 · Apt TODOS
Close - Heat/hot water
Entire building
Oct 30, 2025 · Apt BLDG
Close - Electric
No lighting
Oct 25, 2025 · Apt BLDG
Close - Door/window
Door
Oct 25, 2025 · Apt BLDG
Close - Plumbing
Water supply
Oct 22, 2025 · Apt BLDG
Close - Electric
Power outage
Aug 14, 2023 · Apt 3L
Close - Door/window
Door
May 30, 2023 · Apt BLDG
Close - Unsanitary condition
Garbage/recycling storage
May 30, 2023 · Apt BLDG
Close - Unsanitary condition
Garbage/recycling storage
May 30, 2023 · Apt BLDG
Close - Unsanitary condition
Pests
May 30, 2023 · Apt 99
Close - General
Bell/buzzer/intercom
May 30, 2023 · Apt 99
Close - Unsanitary condition
Sewage
May 30, 2023 · Apt 99
Close - Flooring/stairs
Floor
May 30, 2023 · Apt 99
Close - Safety
Carbon monoxide detector
May 30, 2023 · Apt 99
Close - Unsanitary condition
Pests
May 30, 2023 · Apt 99
Close - Paint/plaster
Wall
May 30, 2023 · Apt 99
Close - Unsanitary condition
Mold
May 30, 2023 · Apt 99
Close - Plumbing
Toilet
May 30, 2023 · Apt 99
Close - Safety
Smoke detector
May 30, 2023 · Apt 99
Close - Unsanitary condition
Garbage/recycling storage
May 11, 2023 · Apt BLDG
Close - Electric
Power outage
Feb 9, 2021 · Apt BLDG
Close - Electric
Power outage
Dec 19, 2020 · Apt BLDG
Close - Electric
Power outage
Dec 18, 2020 · Apt BLDG
Close - Electric
Electric-supply
Aug 11, 2011 · Apt 3FL
Close - General
Windows
Feb 22, 2006 · Apt 3R
Close - Plumbing
Basin/sink
Feb 22, 2006 · Apt 3R
Close - Paint/plaster
Ceiling
Feb 22, 2006 · Apt 3R
Close - Paint/plaster
Wall
Jan 12, 2006 · Apt 3L
Close - General
Windows
Jan 12, 2006 · Apt 3L
Close - Appliance
Electric/gas range
Jan 12, 2006 · Apt 3L
Close - Plumbing
Basin/sink
Jan 12, 2006 · Apt 3L
Close - Paint/plaster
Wall
Jan 12, 2006 · Apt 3L
Close - General
Floor
Jan 12, 2006 · Apt 3L
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Mixed residential and retail building (S4)
- Year built
- 1931
- Floors
- 3
- Residential units
- 4
- Building area
- 4,125 ft²
- Lot area
- 2,500 ft²
- Zoning
- R6
- Community board
- 304
- Council district
- 34
- Block / lot
- 3165 / 32
- Assessed value
- $457,650
- Landmark / historic district
- No
HPD registration #338965, last renewed Jan 27, 2024.
Questions about 186 Knickerbocker Avenue
Who owns 186 Knickerbocker Avenue?
The owner of record in NYC Department of City Planning PLUTO data is Quan Yuan Property Corp..
Does 186 Knickerbocker Avenue have violations?
Yes. NYC HPD has recorded 58 housing violations at this property.
Is 186 Knickerbocker Avenue rent stabilized?
No rent-stabilized units appear in its 2018–2024 tax bills. Individual apartments can still be regulated, so request the rent history from NYS Homes and Community Renewal if unsure.
When was 186 Knickerbocker Avenue built?
City records list 1931 as the year it was built.
How many apartments are in 186 Knickerbocker Avenue?
It has 4 residential units and 5 units in total.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.